MG (Mistras Group Inc.)
Insider Trading Activity
Every open-market purchase and sale reported by MG officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-09 | NATALIA SHUMAN-FABBRI | President and CEO | F | — | — |
| 2026-06-12 | Aspasia Felice Vahaviolos | 10%+ Owner | G | — | — |
| 2026-06-12 | 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos | 10%+ Owner | G | — | — |
| 2026-06-04 | Aspasia Felice Vahaviolos | 10%+ Owner | G | — | — |
| 2026-06-04 | Stephanie Athena Foglia | 10%+ Owner | MIXED | — | — |
| 2026-05-21 | CHARLES P PIZZI | Director | A | — | — |
| 2026-05-21 | NICHOLAS DEBENEDICTIS | Director | A | — | — |
| 2026-05-21 | JAMES J FORESE | Director | A | — | — |
| 2026-05-21 | Michelle Lohmeier | Director | A | — | — |
| 2026-05-21 | RICHARD H GLANTON | Director | A | — | — |
| 2026-03-26 | Hanei Wail Hammad | EVP & Chief Operating Officer | F | — | — |
| 2026-03-23 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2026-03-17 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2026-03-10 | Manuel N. Stamatakis | Executive Chairman | F | — | — |
| 2026-03-10 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2026-03-10 | Gennaro A. D'Alterio | EVP, Chief Commercial Officer | F | — | — |
| 2026-03-10 | Hanei Wail Hammad | EVP & Chief Operating Officer | F | — | — |
| 2026-03-09 | Hanei Wail Hammad | EVP & Chief Operating Officer | MIXED | — | — |
| 2026-03-06 | NATALIA SHUMAN-FABBRI | President and CEO | A | — | — |
| 2026-03-06 | Manuel N. Stamatakis | Executive Chairman | A | — | — |
| 2026-03-06 | Edward J Prajzner | Sr. EVP and CFO | MIXED | — | — |
| 2026-03-04 | Hanei Wail Hammad | EVP & Chief Operating Officer | MIXED | — | — |
| 2026-03-04 | Eileen Mary Coggins | EVP, General Counsel | A | — | — |
| 2026-03-03 | Gennaro A. D'Alterio | EVP, Chief Commercial Officer | MIXED | — | — |
| 2026-02-27 | Aspasia Felice Vahaviolos | 10%+ Owner | G | — | — |
| 2026-01-09 | Manuel N. Stamatakis | Executive Chairman | A | — | — |
| 2026-01-09 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2026-01-05 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2026-01-05 | Manuel N. Stamatakis | Executive Chairman | A | — | — |
| 2025-12-05 | CHARLES P PIZZI | Director | G | — | — |
| 2025-12-04 | Gennaro A. D'Alterio | EVP, Chief Commercial Officer | F | — | — |
| 2025-10-01 | Eileen Mary Coggins | EVP & Chief Legal Officer | A | — | — |
| 2025-09-25 | Eileen Mary Coggins | EVP & Chief Legal Officer | Buy | — | — |
| 2025-09-10 | Aspasia Felice Vahaviolos | 10%+ Owner | W | — | — |
| 2025-09-10 | Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust | 10%+ Owner | G | — | — |
| 2025-09-10 | NATALIA SHUMAN-FABBRI | President and CEO | A | — | — |
| 2025-06-06 | Manuel N. Stamatakis | Executive Chairman | Buy | — | — |
| 2025-05-21 | Michelle Lohmeier | Director | A | — | — |
| 2025-05-21 | JAMES J FORESE | Director | A | — | — |
| 2025-05-21 | CHARLES P PIZZI | Director | A | — | — |
| 2025-05-21 | NICHOLAS DEBENEDICTIS | Director | A | — | — |
| 2025-05-21 | RICHARD H GLANTON | Director | A | — | — |
| 2025-03-20 | Michael C Keefe | EVP, General Counsel | F | — | — |
| 2025-03-20 | Manuel N. Stamatakis | Executive Chairman | Buy | — | — |
| 2025-03-20 | Edward J Prajzner | Sr. EVP and CFO | F | — | — |
| 2025-03-20 | NICHOLAS DEBENEDICTIS | Director | Buy | — | — |
| 2025-03-20 | Gennaro A. D'Alterio | EVP, Chief Commercial Officer | F | — | — |
| 2025-03-06 | Manuel N. Stamatakis | Executive Chairman | A | — | — |
| 2025-03-06 | Michael C Keefe | EVP, General Counsel | A | — | — |
| 2025-03-06 | Edward J Prajzner | Sr. EVP and CFO | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Executive Chairman | 10,352,803 | — |
| — | 10%+ Owner | 1,794,839 | — |
| — | 10%+ Owner | 1,445,871 | — |
| — | 10%+ Owner | 1,412,329 | — |
| — | Director | 965,594 | — |
| — | Executive Chairman | 509,795 | — |
| — | President and CEO | 424,358 | — |
| — | Director | 273,820 | — |
| — | Senior EVP | 240,515 | — |
| — | Sr. EVP and COO | 194,575 | — |
| — | Director | 177,043 | — |
| — | Chief Financial Officer | 164,500 | — |
| — | Group EVP, Products & Systems | 163,120 | — |
| — | Group EVP, International | 160,950 | — |
| — | Sr. EVP and CFO | 148,076 | — |
| — | President and CEO | 123,780 | — |
| — | Executive Vice President | 100,447 | — |
| — | Director | 99,223 | — |
| — | EVP, General Counsel | 91,558 | — |
| — | Director | 73,480 | — |
| — | Director | 71,241 | — |
| — | EVP & Chief Operating Officer | 61,777 | — |
| — | EVP, Chief Commercial Officer | 47,239 | — |
| — | Director | 36,106 | — |
| — | EVP, General Counsel | 22,242 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MG quote page; the site-wide leaderboard is on the insider transactions hub.